Pulse radiolytic induced transient electrical conductance in liquid solutions
Abstract
A conductance technique has been used to study the radiolysis of aqueous solutions of some inorganic cations and of O2 within the first ms after exposure to a submicrosecond pulse of 15 MeV electrons. Further evidence is obtained for the reduction of Cd2+ and Ni2+ to unstable monovalent species. The conductance changes produced in solutions of Ag+ and Cu2+ are only explicable if OH radical oxidation is included in addition to reduction. The rate constants for OH+Ag+ and OH+Cu2+ are 6.3 × 109 and 3 × 108 1.mol–1s–1 respectively. The technique can be used to determine a value of pK( HO2)= 4.80. The ratios of g(H+) to g(e–), g(OH) and g(H) respectively are in agreement with expected values.